JP2008088804A - Ledger plate displacement prevention fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ledger plate displacement prevention fixture which can drastically enhance the assembling work efficiency and safety of a temporary scaffolding and further is eco-friendly and excellent in economy. <P>SOLUTION: The ledger plate displacement prevention fixture comprises a rectangular frame 11 having an opening at its top face, placed so as to stride top faces of four corners 5a of four front/rear ledger plates 5 which correspond to four clamping fixtures 4 and sandwich a horizontal member 3 of a skeleton frame 2 and hooked to the center side of the horizontal member 3 in the four ledger plates 5, four legs 12 protruding downward from both ends of the skeleton frame and inserted in a gap S between the horizontal member 3 and the individual ledger plates 5 and a fixing claw member 13 capable of being hooked to the bottom side of the horizontal member 3. Movement along the horizontal member 2 of the clamping fixture 4 housed in the opening 14 of the skeleton frame 11 is regulated by the inner face 14a of the opening 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a jig for preventing displacement of a cloth plate, which is a work floor of a temporary scaffold, in assembly work of a temporary scaffold for construction work such as civil engineering or a construction site, or construction work using a temporary scaffold.

  An example of a temporary scaffold at a construction site is shown in FIG. As shown in the figure, the temporary scaffold 1 is configured such that the clamp members 4 at the front and rear ends are engaged with the horizontal members 3 of the opposing building frames 2 and 2 so that the two cloth plates 5 and 5 are attached to the building frames 2 and 2. Install between and use. However, the cloth board 5 has an opening that is shifted to the left and right from the original position of the cloth board due to various factors such as wind and vibration caused by walking of the worker, or temporary temporary placement of materials, and threatens the safety of the worker. Often it forms. In order to prevent this, a method of binding and fixing the clamp fitting 4 of the cloth board 5 to a building frame using a binding wire such as a wire or a thin wire (hereinafter referred to as “iron wire”) is widely used. Yes. However, the work of fixing using the iron wire deteriorates the efficiency of the scaffold assembling work and requires many iron wires. In addition, since there is a possibility of injury by stepping on the end of the iron wire or getting caught on clothes when passing through the scaffolding, it is necessary to pay sufficient attention to the treatment after binding the iron wire. Furthermore, this iron wire cannot be diverted elsewhere, and it becomes a factor that generates a huge amount of metal dust when the scaffold is dismantled.

  There has been proposed a temporary scaffold using a spacer that prevents the displacement of the cloth plate without relying on such iron wire binding (see Patent Document 1).

JP 2004-11290 A

  However, the proposed spacer is constructed so as to prevent the movement of the cloth plate by fitting the spacer to the exposed portion generated by moving the two cloth boards to the left or right. As a result, there is a problem in that the exposed portion of the exposed part is moved to the other of the left side or the right side, and as a result, the gap width of the exposed part moved to the other side is increased, and there is a risk that a tool or the like falls from the large gap. .

  The present invention has been made in view of the above problems, and can provide a cloth board slippage prevention jig that can greatly improve the assembly work efficiency and safety of a temporary scaffold, and is also environmentally friendly and economical. The purpose is to do.

  It is another object of the present invention to provide a cloth board slip prevention jig having a high barrier-free effect.

In order to solve the above-mentioned problem, a cloth board slippage prevention jig according to claim 1 according to the present invention comprises:
In a temporary scaffold constructed by laying two cloth plates having clamp metal fittings at four corners on the front and rear corners of a horizontal member of a building frame facing each other, between the building frames along the horizontal member, the two cloth plates A cloth board slip prevention jig for preventing slippage along a horizontal material,
Placed so as to straddle the corners corresponding to the four clamp fittings that are locked near the center of the horizontal material between the two cloth plates in the front and the two cloth plates behind the horizontal material of the building frame A rectangular frame body in which a rectangular opening that can accommodate all four clamp fittings locked to the center of the horizontal member is formed on the upper surface thereof;
On both sides of the rectangular frame facing each other, it protrudes downward by two at the front and rear at a predetermined interval and is located on both sides of the four clamp fittings that are locked toward the center of the horizontal member. Four leg portions that are inserted and arranged two by one in the front and rear, with the horizontal material sandwiched in the gap between the horizontal material and the front and rear cloth plates,
A fixing claw member that is attached and held to the leg by a holding member, and can be locked to the lower side of the horizontal member in a state where the leg is inserted and disposed in a gap between the horizontal member and the front and rear cloth plates. The four clamp fittings housed in the rectangular opening of the frame body are restricted from moving along the horizontal member by the inner surface of the opening. And

  On the horizontal material of the building frame of the temporary scaffold, the clamp fittings of the two cloth plates on the front and the two cloth plates on the rear are held with the horizontal material interposed therebetween. The cloth board slippage prevention jig of the present invention is such that, among the clamp fittings provided in each cloth board, the clamp fittings located near the center of the horizontal member are simultaneously fixed to the horizontal member at the same time. It is intended to prevent shifting along the horizontal material.

  Cover the four clamp fittings, which are locked toward the center of the horizontal member, with the rectangular frame body of the cloth plate displacement prevention jig having the rectangular opening on the upper surface from above, Four leg portions projecting downward by two at the front and rear at a predetermined interval on each of opposite side portions are respectively provided in the gaps between the horizontal members on both sides of the four clamp fittings and the front and rear cloth plates. Insert the frame and place the frame so as to straddle the upper surface of the corner of each cloth plate corresponding to the four clamp fittings. In this mounted state, the four clamp fittings near the center of the horizontal member are all accommodated in the rectangular opening on the upper surface of the frame. In this state, the fixing claw member is locked to the lower side of the horizontal member. The movement of the four clamp fittings housed in the upper surface opening of the frame body along the horizontal member is restricted by the inner surface of the opening. Thereby, the displacement along the horizontal material of each cloth board is prevented.

  The displacement along the horizontal material of each cloth board can be prevented, and the gap between the cloth boards along the horizontal material can be regulated within a predetermined dimension (for example, within 3 cm).

  A frame having a rectangular opening is placed on top of four clamp fittings near the center of the horizontal member from above, and protrudes downward at a predetermined interval to each of opposite side portions of the frame as a pair. The front leg portion (the right hand leg portion in FIG. 5) and the rear leg portion (the left hand leg portion in FIG. 5) provided are a gap between the horizontal material and the front cloth plate (the right hand cloth plate in FIG. 4), and the horizontal material. And a rear cloth board (left hand cloth board in FIG. 4) are inserted and arranged with a horizontal member interposed therebetween. If it does so, the said 4 clamp metal fittings can be fixed to a horizontal material by the very simple operation | work which only locks the nail | claw member for fixation to the lower side of a horizontal material, and the assembly work efficiency of a temporary scaffold will improve significantly. The greater the number of fabric boards used for the temporary scaffold, the greater the effect.

  The cloth board slippage preventing jig according to claim 2 of the present invention is characterized in that the front and rear surfaces of the frame body are smooth slopes.

  In a state where the rectangular frame body is put on the four clamp fittings and the frame body is placed so as to straddle the four opposing corners of the four cloth boards, the upper surface of the rectangular frame body and The slopes of the front and rear surfaces alleviate the step between the cloth plate and the four clamp fittings, and a barrier-free effect of relaxing the barrier when passing over the cloth board can be obtained. As a result, the worker can safely travel on the cloth board.

  According to a third aspect of the present invention, there is provided a cloth board displacement prevention jig in which a notch space having an upper inner shape along an upper outer shape of a horizontal member is formed between front and rear legs.

  With the front and rear legs inserted and arranged in the gap between the horizontal material and the front and back fabric boards, the upper outer surface of the horizontal material abuts the wide area of the upper inner surface of the notch space between the legs, and the fixing claw member is It can be stably locked to the lower side of the horizontal member.

  According to the fourth aspect of the present invention, there is provided the cloth board displacement prevention jig according to the present invention, wherein either one of the front and rear legs is positioned between a position where it is locked to the lower side of the horizontal material and a position where it is released from the lower side of the horizontal material. A fixing claw member having two guide grooves is mounted and held by a holding member so that it can move in an arc, and the fixing claw member is locked to the lower side of the horizontal member in each guide groove of the fixing claw member. A first locking portion for holding the holding member and a second locking portion for holding the holding member at a position where the fixing claw member is detached from the lower side of the horizontal member are provided.

  Thus, the fixing claw member that can be locked to the lower side of the horizontal member with an extremely simple structure can be configured, and the operation of the fixing claw member can be made very simple.

  As described above, according to the cloth plate displacement prevention jig according to the present invention, a predetermined interval is provided between each of the rectangular frame having the rectangular opening on the upper side and the opposite side portions of the frame. Two pairs of front and rear legs on the side of the frame body are inserted into the gaps formed between the horizontal material and the front and rear cloth boards, and separated into the front and rear sides. Assembling efficiency and safety of the temporary scaffolding can be greatly improved by using a jig with an extremely simple structure consisting of four legs that are arranged to be placed and a fixing claw member. It is easy and economical.

  In addition, the front and back of the rectangular frame body are inclined, and the step between the upper surface and the front and rear inclined surfaces of the frame body can be relaxed, and the jig has a high barrier-free effect. There is an effect that can.

  The best mode for carrying out the present invention will be described with reference to FIGS. In these drawings, reference numeral 10 denotes a cloth plate displacement prevention jig, 11 denotes a rectangular frame in plan view, 12 denotes a leg portion, and 13 denotes a fixing claw member. It is comprised from the frame 11, the leg part 12, and the nail | claw member 13 for fixation.

  The rectangular frame 11 is composed of the horizontal material 3 of the two cloth plates 5 and 5 on the front and the two cloth plates 5 and 5 on the back with the horizontal material 3 in the middle of the building frame 2 shown in FIG. Has a size straddling the upper surfaces of the four corners 5a, 5a... Corresponding to the four clamp fittings 4, 4. On the upper surface 11a of the frame 11, a rectangular opening 14 having a size capable of accommodating all the four clamp fittings 4, 4... Is formed. Further, slopes 11b approaching each other as they go upward are formed on the front and rear surfaces of the frame body 11, and the slope angle θ of the slope 11b from the horizontal plane is 30 degrees. The inclination angle θ of the inclined surface 11b is smaller than the inclination angle θ1 of the inclined surfaces of the front and rear ends of the clamp fitting 4, and as a result, the function of relaxing the step between each cloth plate 5 and the clamp fittings 4, 4,. Yes. 4 and 5 show a state in which the four clamp fittings 4, 4,...

  A total of four leg portions 12 protrude downward from the two opposite side portions of the rectangular frame 11 at predetermined intervals in front and rear (FIG. 3). As shown in FIGS. 4 and 5, these leg portions are positioned on both sides of the four clamp fittings 4 that are locked toward the center of the horizontal member 3, and the horizontal member 3 and the front and rear cloth plates 5. The front and rear leg portions 12 and 12 are inserted and arranged in the front and rear gaps S and S formed between the front and rear sides and divided by the horizontal member. As shown in FIG. 6, a notch space 15 having an arc surface 15 a is formed between the leg portions 12, 12 located at the front and rear, and the arc surface 15 a substantially follows the shape of the upper outer surface of the horizontal member 3 having an annular cross section. It is a curved surface.

  One fixing claw member 13 is provided on either of the four legs 12, 12 of the frame 11 on either side of the front and rear sides. In FIG. 1, a fixing claw member is disposed on one side (front side in FIG. 1) of the both sides of the frame body 11 with respect to a leg portion 12 near the front (the left side in FIG. 1 is the front and the right side is the rear). It is attached and held by two holding members 16 and 17 so that the arc 13 can move between a position where 13 is locked to the lower side of the horizontal member 2 and a position where it is released from the lower side of the horizontal member 2. More specifically, the fixing claw member 13 is perforated with two guide grooves 18 and 19 along the arc line so that the fixing claw member 13 can move in an arc between the two positions. , 19 are inserted through the holding members 16, 17 respectively.

  In each guide groove 18, 19, first locking portions 18 a, 19 a that hold the holding members 16, 17 at positions where the fixing claw member 13 is locked to the lower side of the horizontal member 2 are fixed at the upper end. Second locking portions 18b and 19b for holding the holding members 16 and 17 are provided at the lower end limit at positions where the claw member 13 is completely detached from the lower side of the horizontal member 3.

  Similarly, on the other side (the back side in FIG. 1) of the both sides of the frame body 11, the fixing claw member 13 having the same structure as described above is provided with two holding members 16, 17 with respect to the leg portion 12 near the rear. It is attached and held so as to be capable of arc motion. Examples of the holding members 16 and 17 include rivets and bolts as shown in FIG. In the case of a rivet, a hole is drilled at a predetermined position in the plate thickness direction of the leg portion 12, a rivet is inserted, and the tip is crushed and tightened. In the case of a bolt, insert it into the hole in the same way and tighten the nut. The fixing claw member 13 is fastened to such an extent that the side surface of the leg portion 12 can slide.

  The cloth plate displacement prevention jig 10 having the above configuration can integrally manufacture the frame body 11 and the leg portion 12 by cutting, bending, and welding an iron plate such as SS400. Sufficient strength can be ensured by using an iron plate. Moreover, in order to improve rust prevention property, it is good to finish by hot dip galvanization. The fixing claw member 13 can be easily manufactured by cutting an iron plate, and can be easily attached to the leg portion 12 with a rivet or the like. For this reason, the manufacturing cost is low, it is suitable for mass production, and it is economical.

  Next, a method of using the cloth plate displacement prevention jig 10 having the above configuration will be described.

  As shown in the temporary scaffold 1 in FIG. 10, two cloth plates 5 are provided between the intermediate building frame 2 and the front building frame 2, and between the intermediate building frame 2 and the rear building frame 2. However, the clamp fitting 4 is engaged with the horizontal member 3 and installed. As a result, as shown in FIG. 10, the clamp member 4 of the four cloth boards 5 is locked to the horizontal member 3 of the intermediate building frame 2 with the horizontal member 3 sandwiched between them. The remaining four clamp fittings 4 except for the four clamp fittings 4 are located closer to the center of the horizontal member 3.

  The cloth plate displacement prevention jig 10 is attached so that the four clamp fittings 4 near the center are covered with a rectangular frame 11 having an upper surface opening from above. First, as shown in FIGS. 4 and 5, the four leg portions 12 of the cloth plate displacement prevention jig 10 are positioned on both sides of the four clamp fittings 4, and the horizontal member 3 and the front and rear cloth plates 5. The gap 11 is inserted into the gap S from above, the arcuate surface 15a of the notch space 15 is brought into contact with the upper outer peripheral surface of the horizontal member 3, and the frame body 11 is provided with four corners 5a closer to the center of the front and rear cloth plates 5. It is placed so as to straddle the upper surface of. At this time, all the four clamp fittings 4 near the center of the horizontal member 3 are accommodated in the openings 14 on the upper surface of the frame 11.

  Next, from the state of FIG. 5, the fixing claw member 13 is given the counterclockwise arc motion of FIG. 5, and the tip of the fixing claw member 13 is engaged with the lower side of the horizontal member 3 as shown in FIG. 6. Stop. At this time, the upper and lower holding members 16 and 17 are positioned at the first locking portions 18a and 19a at the upper limit of the guide grooves 18 and 19, and the locking claw member 13 is locked to the lower side of the horizontal member 3. It becomes a fixed state. In this fixed state, the fixed state is maintained and the fixed state is not easily released unless the fixing claw member 13 is artificially circularly moved clockwise in FIG.

  In a state where the fixing claw member 13 is locked to the lower side of the horizontal member 3, the four clamp fittings 4 accommodated in the opening 14 on the upper surface of the frame 11 are horizontally aligned by the inner side surface 14 a of the opening 14. Movement along the material 3 is restricted. Thereby, the shift | offset | difference with respect to the direction along the horizontal member 3 of the cloth board 5 can also be prevented.

  Depending on the size of the cloth plate 5, a gap may be formed between the inner side surface 14a of the frame body 11 and the clamp fitting 4 shown in FIG. In this case, the inserter 20 shown in FIG. 8 and FIG. 9 may be used in order to securely mount the clamp fitting 4 along the horizontal member 3 so as to close the gap. .

  As shown in FIG. 8, the inserter 20 is positioned near one side in the width direction W of the opening 14 on the upper surface of the frame body 11 so as to close the gap, and has concave grooves 20 a and 20 a on both end faces. By fitting with the edge portions 14a, 14a along the width direction W of the opening 14, the opening 14 is mounted in a fixed state, whereby the width dimension W1 of the opening 14 can be adjusted. The inserter 20 can finely adjust the width dimension W1 of the opening 14 by preparing several sizes having different width dimensions W2.

  In order to attach the inserter 20 to the opening 14, the inserter 20 is once arranged in the opening 14 along the diagonal line of the opening 14 as shown by a dashed line in FIG. And the concave grooves 20a, 20a on both end faces are fitted to the edge portions 14a, 14a along the width direction W of the opening 14 and moved to one side in the width direction W as they are.

  The inventor made a prototype of the fabric board displacement prevention jig 10 according to the present invention. The size of the prototype fabric board displacement prevention jig 10 is such that the frame 11 is width × length × height = 110 mm × 180 mm × 14 mm, and the opening 14 of the frame 11 is width × length = 70 mm × 110 mm. . Here, the width indicates a direction along the horizontal member 3, and the length indicates a direction orthogonal to the horizontal member 3. It turned out that it can apply to the size of most cloth boards 5 currently marketed by making the opening part 14 of the frame 11 into the said magnitude | size. That is, if the opening part 14 of the frame 11 is made into the said magnitude | size, when most cloth boards 5 marketed now are applied to the temporary scaffolding 1, it will be latched in the center of the horizontal material 3. It was found that all of the clamp fitting 4 can be accommodated in the opening 14.

  The cloth board slippage prevention jig according to the present invention is used as a jig for preventing a cloth board, which is a work floor of a temporary scaffold for construction work or repair work in a civil engineering or construction site, in a direction along a horizontal material. be able to.

The perspective view of the cloth board shift prevention jig of the present invention, FIG. 1 is a plan view of the cloth plate displacement prevention jig shown in FIG. The perspective view which shows the state which looked up at the cloth board slippage prevention jig | tool shown in FIG. 1 from diagonally downward, The top view which shows the state which mounted | wore the horizontal material and cloth board of the building frame of a temporary scaffold with the cloth board slip prevention jig | tool shown in FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 4, and is a cross-sectional view illustrating a state in which the cloth plate displacement prevention jig is fixed to a horizontal member; Sectional drawing which shows the state before fixing with respect to the horizontal member of a cloth board deviation | shift prevention jig, Sectional drawing which shows the fixed state with respect to the horizontal member of a cloth board slippage prevention jig, The top view explaining the example which mounts an inserter in the opening of a frame, FIG. 8 is a cross-sectional view taken along the line B-B of FIG. It is a perspective view which shows the temporary scaffold to which the cloth board shift prevention jig | tool which concerns on this invention is applied.

Explanation of symbols

1: Temporary scaffolding 2: Building frame 3: Horizontal material 4: Clamp metal fitting 5: Cloth plate 10: Cloth plate displacement prevention jig 11: Frame body 11a: Upper surface 11b: Inclined surface 12: Leg portion 13: Claw member for fixing 14 : Opening part 14a: Edge part 15: Notch space 15a: Arc surface 16, 17: Holding member 18, 19: Guide groove 18a, 19a: First locking part 18b, 19b: Second locking part 20: Inserter 20a : Groove W: Width direction W1: Opening width dimension W2: Inserter width dimension

Claims (4)

In a temporary scaffolding constructed by laying two cloth plates having clamp metal fittings at four corners in the front and rear corners on a horizontal member of a building frame facing each other, between the building frames along the horizontal member, the two cloth plates A cloth board slip prevention jig for preventing slippage along a horizontal material,
Placed so as to straddle the corners corresponding to the four clamp fittings locked near the center of the horizontal material between the two cloth plates in the front and the two cloth plates behind the horizontal material of the building frame A rectangular frame having a rectangular opening formed on its upper surface that can accommodate all four clamp fittings locked toward the center of the horizontal member;
On both sides of the rectangular frame facing each other, it protrudes downward by two at the front and rear at a predetermined interval and is located on both sides of the four clamp fittings that are locked toward the center of the horizontal member. Four leg portions that are inserted and arranged two by one in the front and rear, with the horizontal material sandwiched in the gap between the horizontal material and the front and rear cloth plates,
A fixing claw member that can be locked to the lower side of the horizontal member in a state that the leg portion is attached and held by the holding member, and the leg portion is inserted and disposed in a gap between the horizontal member and the front and rear cloth plates. The four clamp fittings housed in the rectangular opening of the frame body are restricted from moving along the horizontal member by the inner surface of the opening. Cloth board slip prevention jig.   The cloth board slippage prevention jig according to claim 1, wherein the front and rear surfaces of the rectangular frame are smooth slopes.   The cloth board slippage prevention jig according to claim 1 or 2, wherein a notch space having an upper inner shape along the upper outer shape of the horizontal member is formed between the front and rear legs. A fixing claw member provided with two guide grooves so as to be able to perform an arc motion between a position where it is latched on the lower side of the horizontal member and a position where it is detached from the lower side of the horizontal member with respect to either of the front and rear legs. A first locking portion for holding the holding member at a position where the fixing claw member is locked to the lower side of the horizontal member, and a fixing claw member. The cloth board shift according to any one of claims 1 to 3, further comprising a second locking portion for holding the holding member at a position where the holding member is detached from the lower side of the horizontal member. Prevention jig.